Tip #9: Switch to "Green" Power via Your Local Utility CompanyIn many states, you can opt to purchase renewable energy from your local power company, and then rest easy knowing you just sent that email from your wind- or methane-powered computer. To find out if your local utility has a green power source, check the Green Power Network's U.S. map. Austin Energy generated the most green power last year, followed by Portland General Electric. Xcel Energy (in Colorado and elsewhere) had the highest number of customers who purchased renewable energy (more than 49,354).

Help nudge your local utility toward a deeper shade of green by opting into their renewable energy program.

Tip #10: Spread the WordWant to shake some sense into people? Use the web as your own personal bullhorn to make the world a greener place. Inform your inner circle about good causes or upcoming legislation via e-mail. You can also direct friends to the net to familiarize themselves with personal impact calculators, simple tips, activism options, and blogs of others in the community who are trying to make the planet a little greener.

If you have a blog or website, start posting information about the issues that matter to you. Awareness is the key to a sustainable planet, and the web gives you a powerful way to be part of the solution.